Yeast Base without Vitamins - BioReagent

Cat. No.: Y1528777

GRADE & PURITY BioReagent

Storage

Room temperature

Shipped In

Normal

Visão geral

For classification of yeasts based on vitamin utilization

Specifications

Especificações e pureza

BioReagent

Condições de armazenamento de armazenamento

Room temperature

Enviado em

Normal

Grau

BioReagent

Product Line

Produtos biológicos

Application Protocols

No vendor‑validated assay protocols are provided in the Product Data. Below is general, literature‑style guidance for preparing a yeast medium using a base without vitamins. This is informational and not item‑specific.

General preparation (example framework; adapt to your SOP)

• Calculate the required mass of Yeast Base without Vitamins for your target volume according to your lab’s recipe or the CoA.
• Add the powder gradually to ~80–90% of the final volume of purified water with vigorous stirring.
• Adjust pH as required by your protocol.
• Sterilize the base by autoclaving (e.g., 121 °C, ~15 min). Cool to room temperature.
• Separately prepare vitamin stock solutions and any heat‑labile supplements; sterile‑filter (0.2 µm) and add aseptically to the cooled sterile base. Bring to final volume with sterile water.
• Distribute into sterile vessels/plates. For plates, add sterile agar according to your formulation before sterilization or sterile‑combine if using filter‑sterilized components.

Quality control

• Include uninoculated sterility controls and a reference strain to verify expected growth under your vitamin regimen.

For exact quantities and performance specifications, refer to the CoA/Spec Sheet and your internal SOPs.

Biological Roles

Context: As a medium base, this product provides essential inorganic nutrients and nitrogen sources for yeast growth while intentionally omitting vitamins. The biological “roles” here pertain to how components support yeast physiology when combined with appropriate supplements.

General functions in yeast biology (informational)

• Ionic/osmotic balance: Phosphate, sulfate, potassium, magnesium, and other ions maintain osmotic pressure, buffering capacity, and serve as enzyme cofactors.
• Nitrogen metabolism: Ammonium or alternative nitrogen sources fuel amino acid and nucleotide biosynthesis; the absence of vitamins allows study of cofactor biosynthesis pathways.
• Trace elements: Micronutrients (e.g., Fe, Zn, Mn, Cu in trace amounts) support metalloproteins and redox enzymes crucial for central metabolism.
• Vitamin dependency studies: By excluding vitamins (e.g., biotin, inositol, thiamine), researchers can probe auxotrophies, transcriptional regulation under vitamin limitation, and cofactor‑dependent flux changes.
• Carbon source flexibility: When paired with glucose, ethanol, glycerol, or other carbons, the base supports investigations into Crabtree effect, respiratory versus fermentative growth, and diauxic shifts.

Use cases

• Construction of synthetic defined (SD) or dropout media with precise vitamin control.
• Assessment of vitamin transporter function and cofactor salvage pathways by titrating individual vitamins post‑sterilization.

Note: No clinical or therapeutic claims are made. For exact component concentrations in this item, refer to the CoA/Spec Sheet.

Buffer Applications

This product is not a standalone buffer system. It is a dehydrated yeast medium base that is typically dissolved in water and then sterilized. Any buffering capacity arises from salts present in the formulation and from added components.

Practical notes (general)

• If a defined pH is critical (e.g., pH 5.8–6.2 commonly used in yeast literature), adjust with HCl/NaOH after dissolution; verify pH again after sterilization.
• For experiments requiring strong pH control, consider adding an auxiliary buffer compatible with yeast (e.g., phosphate or citrate systems), ensuring that ionic strength and phosphate do not interfere with your endpoints.

For item‑specific pH targets or inherent buffering, no data are provided; consult your protocol or CoA/Spec Sheet.

Green Alternatives

This product is already an aqueous, solvent‑free laboratory consumable with comparatively low EHS impact during normal use. Greenness considerations focus on preparation and sterilization practices.

Greener practice opportunities (general)

• Solvent profile: Water-only systems minimize VOC emissions and hazardous waste.
• Energy use: Autoclaving is energy‑intensive. Where validated, consider steam‑efficient cycles, load consolidation, or filter sterilization for heat‑labile supplements to reduce energy demand.
• Waste minimization: Prepare only the volume needed; store sterile aliquots to decrease discard rates. Decontaminate via autoclave before disposal to avoid chemical disinfectants.
• Packaging: If available, select bulk packs that match your throughput to reduce packaging waste; recycle containers per local guidance.

Comparison (general considerations)

• Complete media vs. base + supplements: Using a base without vitamins lets you add only necessary vitamins, reducing overuse of nutrients and potential downstream treatment loads.
• Powdered vs. ready‑to‑use liquid media: Powders reduce shipping weight/volume (lower transport footprint) and allow on‑demand preparation, but require in‑house sterilization energy.

Note: No item‑specific environmental certifications or metrics are provided; consult your institution’s sustainability office for lab‑level improvements.

Pharmaceutical Uses

Not intended for human or veterinary use. No medical or clinical applications are claimed.

Research/manufacturing context (general)

• This medium base may be used in research and development settings, including screening and process development for yeast‑based production strains (e.g., recombinant protein expression or metabolite production) under controlled vitamin regimens.
• It is not produced under GMP and should not be used for commercial manufacturing or clinical lot release testing without appropriate qualification.

Pharmacopeial status and excipient roles

• No pharmacopeia monograph or excipient status is indicated for this item. Any use as a component in regulated workflows would require internal qualification and supplier quality assessment.

All statements are limited to laboratory research use as provided in the Product Data (For research use only).

Physical Properties

Because this is a complex dehydrated medium base (not a single compound), fixed physicochemical constants are not defined for the product as a whole.

Item-specific specifications

• Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• Molecular formula / Molecular weight: Not applicable for mixtures.

Literature/general properties for dehydrated yeast media bases (informational, not product specifications)

• Physical state: Free‑flowing, hygroscopic powder; color can range from off‑white to tan depending on formulation and trace components.
• Solubility: Water‑soluble; dissolves in purified water with stirring; may be slightly turbid prior to sterilization and typically clears upon proper autoclaving or sterile filtration (literature/general).
• pH of prepared medium: The working pH after dissolution and sterilization is formulation‑dependent; many yeast minimal media are adjusted around pH 5.0–6.5 in the literature. For this item, specific pH targets are not specified; follow your protocol or CoA.
• Density, refractive index, logP, bp/mp: Not applicable/relevant for a solid, multi‑component medium.

Practical notes (general)

• Use freshly produced Type I/II deionized water to minimize precipitation from carbonate or divalent cations.
• Gentle heating (<60 °C) can aid dissolution; avoid localized overheating to prevent caramelization if carbohydrate is present in your recipe.

Quality and Grades

• Supplied grade: BioReagent. In practice, BioReagent grade denotes suitability for common biological and biochemical laboratory procedures, with controlled bioburden and manufacturing consistency appropriate for research media preparation. It is not a GMP grade and is not intended for clinical use.
• UV/trace contamination limits: Not specified for this item; refer to CoA/Spec Sheet.
• Formulation reproducibility: Lots of dehydrated media are typically blended to tight tolerances to ensure reproducible growth performance when prepared according to instructions. For critical experiments (e.g., auxotrophic selections), verify performance with an internal control strain.
• Stabilizers/antimicrobials: None are implied or specified; Not specified for this item; refer to CoA/Spec Sheet.
• What BioReagent means for this product
  • Sourced and blended for research applications (yeast genetics, physiology, selectable media when vitamins are defined separately).
  • Typically compatible with sterilization by autoclaving or sterile filtration of prepared solutions; follow your lab protocol.

Documentation and lot control

• For precise component profile, heavy metals, ash content, or microbiological performance specifications (e.g., growth promotion), consult the Certificate of Analysis/Specification Sheet for the lot you receive.

Reaction and Applications

Applications are microbiological rather than synthetic chemistry.

Typical research uses (general, align with “without vitamins” specification)

• Defined media construction: Combine this base with carbon sources (e.g., glucose), amino acids, and a custom vitamin mix to build minimal or selective media for Saccharomyces and other yeasts.
• Auxotrophic selection and plasmid maintenance: Omission or inclusion of specific vitamins supports selection of engineered strains or assessment of vitamin biosynthetic pathways.
• Physiology and metabolic studies: Vitamin limitation/repletion experiments to probe cofactor dependencies, flux through biosynthetic routes, and transcriptional responses.
• Fermentation/process development: Supports screening of vitamin feeding strategies, defining media for reproducibility, and scale‑down modeling of nutrient limitations.

Practical tips (general best practices)

• Dissolution: Add powder gradually to vigorously stirred purified water to prevent clumping; warm gently if needed.
• Clarification/sterilization: Autoclave prepared base where appropriate. Add vitamins post‑sterilization via 0.2 µm filtration to avoid thermal degradation.
• Controls: Include a known vitamin “complete” control to benchmark growth rates and verify the selectivity of your custom formulation.
• Record-keeping: Document lot numbers and exact supplement recipes to ensure experiment-to-experiment comparability.

Manufacturer Applications: Not specified in the Product Data; the above are common research uses consistent with a yeast base minus vitamins.

Reaction Conditions

Chemical reaction parameters (solvent, temperature, catalysts, yields) are not applicable to this product.

Microbiological preparation conditions (general, literature-based guidance; not product specifications)

• Dissolution solvent: Purified water.
• Sterilization: Autoclave at 121 °C for ~15 minutes for the base solution unless your protocol specifies otherwise. Add vitamins post‑sterilization via 0.2 µm filtration.
• Temperature for use: Incubate inoculated media at temperatures appropriate for the organism/experiment (e.g., 25–30 °C for many Saccharomyces strains; follow your protocol).
• Aeration: Shaking at 150–250 rpm in baffled flasks or controlled aeration in bioreactors to maintain dissolved oxygen, depending on carbon source and experimental goals.

For item‑specific preparation instructions, concentrations, and pH set points, consult your CoA/Spec Sheet or validated lab protocol.

Safety and Handling

Hazard classification details for this specific item are not provided in the Product Data.

Item-specific hazard data

• Signal word: Not specified for this item; refer to SDS.
• GHS classification / pictograms / H‑statements: Not specified for this item; refer to SDS.

General safety guidance for dehydrated microbiological media (informational; defer to SDS)

• Likely hazards: Dust may cause mechanical irritation to eyes/respiratory tract. Complex powders can be hygroscopic and may cake on exposure to humidity.
• PPE: Use lab coat, safety glasses, and appropriate gloves. When handling powders, especially in bulk, use dust control (fume hood or particulate respirator per risk assessment).
• First aid (overview): If inhaled, move to fresh air; if eye contact, rinse cautiously with water for several minutes; if skin contact, wash with soap and water. Seek medical advice if irritation persists. Follow SDS instructions.
• Incompatibilities: Store away from strong acids/bases that could shift pH dramatically, and from oxidizers if the formulation includes organic components. Avoid moisture exposure.
• Microbiological practice: Treat used media and cultures as biohazardous; follow institutional waste and autoclave procedures.

Always consult the product’s SDS and institutional EHS guidance for authoritative hazard and handling information.

Solvent Selection

Not a solvent. This product is a dehydrated medium base intended for dissolution in water.

Practical guidance for medium preparation (general)

• Primary solvent: Purified water (DI/RO, Type I/II). Avoid hard water to minimize precipitation.
• Miscibility: Fully water‑soluble when prepared per protocol; no organic solvents are required or recommended for routine use.
• Order of addition: Dissolve the base thoroughly in water before adding heat‑labile supplements (e.g., vitamins, amino acids, antibiotics), which are typically filter‑sterilized and added aseptically to cooled sterile medium.
• pH adjustment: Adjust with NaOH or HCl if your protocol requires a defined pH; measure after sterilization as autoclaving can shift pH.
• When to choose this base vs alternatives: Select a “without vitamins” base when you need to control vitamin composition precisely (e.g., auxotrophic selections, metabolic pathway studies). Choose a complete yeast base (with vitamins) for routine propagation where vitamin control is unnecessary.

Storage and Reconstitution

Storage (item-specific)

• Storage conditions: Room temperature (per Product Data). Keep container tightly closed in a cool, dry place. Protect from moisture to prevent caking and degradation.
• Shipped: Normal conditions (per Product Data).

Reconstitution and sterilization (general guidance; not item-specific specifications)

• Water quality: Use fresh DI/RO water. Add powder slowly under stirring to avoid clumping.
• pH: Adjust per your protocol; verify after sterilization due to potential pH drift.
• Sterilization: Autoclave the base solution as appropriate. Add vitamins and other heat‑labile supplements after cooling via sterile filtration (0.2 µm) under aseptic conditions.
• Storage of prepared media: Store at 2–8 °C for short term when compatible with your application; warmed to room temperature before use. Avoid repeated warming/cooling cycles.
• Aliquoting: For long experimental series, prepare single‑use sterile aliquots to maintain consistency and reduce contamination risk.

Stability/shelf life

• Shelf life and component stability are not specified for this item; refer to CoA/Spec Sheet. Inspect for clumping, discoloration, or odor as signs of moisture exposure or degradation before use.

Structure and Identity

This product is a complex, dehydrated microbiological medium base formulated for Saccharomyces and other yeast cultivation when vitamins are supplied separately.

• Product type: Yeast Base without Vitamins (dehydrated culture medium mixture)
• Composition nature: Multi‑component inorganic/organic salts and nitrogen sources; no added vitamins. Exact formulation is proprietary and may vary by manufacturer lot. Not a single defined chemical entity.
• CAS, CID, InChIKey, SMILES: Not applicable to complex mixtures (not specified for this item; refer to CoA/Spec Sheet).
• Molecular formula / Molecular weight: Not applicable to mixtures (not specified for this item; refer to CoA/Spec Sheet).
• Structural features (descriptive): Contains typical yeast medium constituents such as ammonium and/or other nitrogen sources, sulfate/phosphate salts, trace minerals, and potentially carbohydrate constituents in some formulations; vitamins are intentionally omitted to enable defined supplementation and selective regimes.
• 2D structure description: Not applicable; this is a multi‑component blend rather than a single molecule with a definable 2D structure.

Item-specific identity anchors

• SKU: Y1528777
• Grade: BioReagent
• Category: Life Science (microbiology/yeast culture)
• Research use: For research use only

Synthetic Utility

Not applicable. This product is a biological culture medium base rather than a discrete synthetic reagent. It is not typically used as a reactant, catalyst, or solvent in chemical synthesis.

For relevant information, see the sections: Reaction & Applications (microbiological), Biological Roles, and Storage & Reconstitution.

Target Specificity

Not applicable. This product is not an antibody, probe, or targeted biochemical. It is a general yeast culture medium base without vitamins. No antigen, epitope, species reactivity, clone, or isotype data apply.

Perguntas frequentes

How should this product be stored?

Store at room temperature.